Notes on Michael Schuelke's pselaphine collections from China. - Tyrini. I. genera Labomimus Sharp, Linan Hlavac and Pselaphodes Westwood (Coleoptera, Staphylinidae, Pselaphinae) Yin, Zi-Wei Li, Li-Zhen ZooKeys 2012 251 83 118 urn:lsid:zoobank.org:act:88F4D2D6-C9B6-4B74-9CC4-472673FC4EBE Yin & Li Insecta Staphylinidae Labomimus CoL Animalia Labomimus sarculus Coleoptera 5 88 Arthropoda species sarculus  Type material (2 ♂♂). Holotype: ♂, labeled 'CHINA: Yunnan, Baoshan Pref., Gao- / ligong Shan, 32 km SE Tengchong,/ 2150-2250 m, 24°51-53'N, 98°45'E, / devast. prim. and second. forest litter, / dead wood, mushrooms sifted, 26.VIII. / 2009, leg. M. Schuelke[CH09-08/09]' (cSch). Paratype: 1 ♂, same label data as holotype (cSch).  Diagnosis. Reddish brown; length 2.89-3.02; postgenae nearly rounded; antennomeres IX-XIenlarged, IX-Xmodified in the male; pronotum with lateral margins slightly angularly expanded laterally; metaventral processes short and sharp; metacoxae with large hook-like ventral protuberance; aedeagus with symmetric median lobe.  Description. Male (Fig. 6A). Length 2.89-3.02. Head longer than wide, HL 0.70-0.71, HW 0.66-0.69; eyes each composed of about 25 facets. Antennal clubs as in Fig. 7A. Pronotum (Fig. 7B) slightly longer than wide, PL 0.68-0.70, PW 0.64-0.65, with lateral margins slightly angularly expanded. Elytra wider than long, EL 0.75-0.76, EW 1.18-1.19. Metaventral processes short, narrowed apically with pointed apices (Fig. 7C). Protrochanters with small ventral spine, profemora with large sharp spine at ventral margin (Fig. 7D), protibiae (Fig. 7E) with distinct preapical apur; mesotrochanters (Fig. 7F) with indistinct tiny spine at ventral margin; metacoxae (Fig. 7G) with big hook-like protuberance at ventral margin, metatrochanters and metafemora simple. Abdomen broad at base and narrowed apically, AL 0.76-0.85, AW 1.23-1.26. Sternite IX as in Fig. 7H. Aedeagus length 0.60, median lobe symmetric, narrowed from base toward apex (Figs 7 I-K). Female. Unknown.  Comparative notes. This species is placed near Labomimus cognatusand Labomimus vespertiliodescribed below by sharing a similar habitus, the short median metaventral process and the protuberant metacoxae. Labomimus sarculuscan be readily separated from both species by the unique modified antennomeres IX, longer apical spur of protibiae and the aedeagus has the median lobe medially straight at the apex, not concave.  Distribution. Southwest China: Yunnan.  Biology. Individuals were sifted from leaf litter and mixed deadwood and mushrooms in a devastated primary and secondary forest.  Etymology. The Latin word 'sarculus'means 'a hoe', referring to the uniquely modified antennomeres IX.  Figure 6. Male habitus of Labomimusand Linanspp. A Labomimus sarculusB Labomimus schuelkeiC Labomimus vespertilioD Linan tendothorax. Scales: 1.0 mm.  Figure 7. Diagnostic features of Labomimus sarculus. A antenna B pronotum C median meteventral process, in lateral view D protrochanter and profemur E apical portion of protibia F mesotrochanter and mesofemur G metacoxa, metatrochanter and metafemur H sternite IX I aedeagus, in dorsal view J same, in lateral view K same, in ventral view. Scales (mm): A, B, D, F, G = 0.3; C, I, J, K = 0.2; H = 0.1; E = 0.05.